Quote Originally Posted by senna View Post
Its not a honda engine, but when i built my motor with billet rods and forged pistons, i threw it together in a garage then loaded a standard tune. Put normal semi-synthetic oil in and went for a 400km round trip drive. I drove it as i would going to work orto a mates place. Not thrashing but loading up the engine.

Motor has now done over 60,000kms and has no problems.

Assembly has alot to do with how long your engine will last, the run in IMO is not as critical as some may have you believe.

Also, 13.5 AFR is crazy lean at WOT if you ask me - should be down closer to 12

Running n/a at 13.5 shouldnt be a huge problem, most I know run 12~13.